Q: If 2x minus 8 equals 4 what does x equal?

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x = 4 and y = 7

2x2 + 2x - 8 = 2(x2 + x - 4). This can take any value greater than or equal to -8.5

3x - 2x + 4 = 0 3x - 2x = -4 x = -4

x = 4 and y = 7 which will satisfy both equations

An equation where x equals 3.

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x = 4 and y = 7

2x2 + 2x - 8 = 2(x2 + x - 4). This can take any value greater than or equal to -8.5

3x - 2x + 4 = 0 3x - 2x = -4 x = -4

x = 4 and y = 7 which will satisfy both equations

An equation where x equals 3.

2x-y = 4 -y = -2x+4 y = 2x-4 in slope-intercept form

It follows that x - 1 = 2x - 5 as each expression is equal to y. Add 1 to each side: x = 2x - 4 Add 4 to each side: x + 4 = 2x Subtract x from each side: 4 = x y = x - 1 = 3

6 - 3x = 4 - 2x 6 = x + 4 x = 2 Check it. 6 - 6 = 4 - 4 It checks.

2x+3-7=0 2x=4 x=2

y + 4 = 2x −1

2x squared minus 4

x= Negative 4